<template>
    <div class="app-container">
        <div class="search-container">
            <el-form ref="queryFormRef" :model="queryParams" :inline="true">
                <el-form-item label="关键字" prop="keywords">
                    <el-input
                        v-model="queryParams.keywords"
                        placeholder="菜单名称"
                        clearable
                        @keyup.enter="handleQuery"
                    />
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" @click="handleQuery">
                        <template #icon><i-ep-search /></template>
                        搜索
                    </el-button>
                    <el-button @click="handleResetQuery">
                        <template #icon><i-ep-refresh /></template>
                        重置
                    </el-button>
                </el-form-item>
            </el-form>
        </div>

        <el-card shadow="never" class="table-container">
            <template #header>
                <el-button v-hasPerm="['sys:menu:add']" type="success" @click="handleOpenDialog(0)">
                    <template #icon><i-ep-plus /></template>
                    新增
                </el-button>
            </template>

            <el-table
                v-loading="loading"
                :data="menuTableData"
                highlight-current-row
                row-key="id"
                :expand-row-keys="['1']"
                :tree-props="{
                    children: 'children',
                    hasChildren: 'hasChildren'
                }"
                @row-click="handleRowClick"
            >
                <el-table-column label="菜单名称" min-width="200">
                    <template #default="scope">
                        <template v-if="scope.row.icon && scope.row.icon.startsWith('el-icon')">
                            <el-icon style="vertical-align: -0.15em">
                                <component :is="scope.row.icon.replace('el-icon-', '')" />
                            </el-icon>
                        </template>
                        <template v-else-if="scope.row.icon">
                            <svg-icon :icon-class="scope.row.icon" />
                        </template>
                        <template v-else>
                            <svg-icon icon-class="menu" />
                        </template>
                        {{ scope.row.name }}
                    </template>
                </el-table-column>

                <el-table-column label="类型" align="center" width="80">
                    <template #default="scope">
                        <el-tag v-if="scope.row.type === MenuTypeEnum.CATALOG" type="warning">目录</el-tag>
                        <el-tag v-if="scope.row.type === MenuTypeEnum.MENU" type="success">菜单</el-tag>
                        <el-tag v-if="scope.row.type === MenuTypeEnum.BUTTON" type="danger">按钮</el-tag>
                        <el-tag v-if="scope.row.type === MenuTypeEnum.EXTLINK" type="info">外链</el-tag>
                    </template>
                </el-table-column>

                <el-table-column label="路由名称" align="left" width="150" prop="routeName" />

                <el-table-column label="路由路径" align="left" width="150" prop="routePath" />

                <el-table-column label="组件路径" align="left" width="250" prop="component" />

                <el-table-column label="权限标识" align="center" width="200" prop="perm" />

                <el-table-column label="状态" align="center" width="80">
                    <template #default="scope">
                        <el-tag v-if="scope.row.visible === 1" type="success">显示</el-tag>
                        <el-tag v-else type="info">隐藏</el-tag>
                    </template>
                </el-table-column>

                <el-table-column label="排序" align="center" width="80" prop="sort" />

                <el-table-column fixed="right" align="center" label="操作" width="220">
                    <template #default="scope">
                        <el-button
                            v-if="scope.row.type == 'CATALOG' || scope.row.type == 'MENU'"
                            v-hasPerm="['sys:menu:add']"
                            type="primary"
                            link
                            size="small"
                            @click.stop="handleOpenDialog(scope.row.id)"
                        >
                            <i-ep-plus />
                            新增
                        </el-button>

                        <el-button
                            v-hasPerm="['sys:menu:edit']"
                            type="primary"
                            link
                            size="small"
                            @click.stop="handleOpenDialog(undefined, scope.row.id)"
                        >
                            <i-ep-edit />
                            编辑
                        </el-button>
                        <el-button
                            v-hasPerm="['sys:menu:delete']"
                            type="danger"
                            link
                            size="small"
                            @click.stop="handleDelete(scope.row.id)"
                        >
                            <i-ep-delete />
                            删除
                        </el-button>
                    </template>
                </el-table-column>
            </el-table>
        </el-card>

        <el-drawer v-model="dialog.visible" :title="dialog.title" size="50%" @close="handleCloseDialog">
            <el-form ref="menuFormRef" :model="formData" :rules="rules" label-width="100px">
                <el-form-item label="父级菜单" prop="parentId">
                    <el-tree-select
                        v-model="formData.parentId"
                        placeholder="选择上级菜单"
                        :data="menuOptions"
                        filterable
                        check-strictly
                        :render-after-expand="false"
                    />
                </el-form-item>

                <el-form-item label="菜单名称" prop="name">
                    <el-input v-model="formData.name" placeholder="请输入菜单名称" />
                </el-form-item>

                <el-form-item label="菜单类型" prop="type">
                    <el-radio-group v-model="formData.type" @change="handleMenuTypeChange">
                        <el-radio value="CATALOG">目录</el-radio>
                        <el-radio value="MENU">菜单</el-radio>
                        <el-radio value="BUTTON">按钮</el-radio>
                        <el-radio value="EXTLINK">外链</el-radio>
                    </el-radio-group>
                </el-form-item>

                <el-form-item v-if="formData.type == 'EXTLINK'" label="外链地址" prop="path">
                    <el-input v-model="formData.routePath" placeholder="请输入外链完整路径" />
                </el-form-item>

                <el-form-item v-if="formData.type == MenuTypeEnum.MENU" prop="routeName">
                    <template #label>
                        <div>
                            路由名称
                            <el-tooltip placement="bottom" effect="light">
                                <template #content>
                                    如果需要开启缓存，需保证页面 defineOptions 中的 name 与此处一致，建议使用驼峰。
                                </template>
                                <i-ep-QuestionFilled class="inline-block" />
                            </el-tooltip>
                        </div>
                    </template>
                    <el-input v-model="formData.routeName" placeholder="User" />
                </el-form-item>

                <el-form-item
                    v-if="formData.type == MenuTypeEnum.CATALOG || formData.type == MenuTypeEnum.MENU"
                    prop="routePath"
                >
                    <template #label>
                        <div>
                            路由路径
                            <el-tooltip placement="bottom" effect="light">
                                <template #content>
                                    定义应用中不同页面对应的 URL 路径，目录需以 / 开头，菜单项不用。例如：系统管理目录
                                    /system，系统管理下的用户管理菜单 user。
                                </template>
                                <i-ep-QuestionFilled class="inline-block" />
                            </el-tooltip>
                        </div>
                    </template>
                    <el-input
                        v-if="formData.type == MenuTypeEnum.CATALOG"
                        v-model="formData.routePath"
                        placeholder="system"
                    />
                    <el-input v-else v-model="formData.routePath" placeholder="user" />
                </el-form-item>

                <el-form-item v-if="formData.type == MenuTypeEnum.MENU" prop="component">
                    <template #label>
                        <div>
                            组件路径
                            <el-tooltip placement="bottom" effect="light">
                                <template #content>
                                    组件页面完整路径，相对于 src/views/，如 system/user/index，缺省后缀 .vue
                                </template>
                                <i-ep-QuestionFilled class="inline-block" />
                            </el-tooltip>
                        </div>
                    </template>

                    <el-input v-model="formData.component" placeholder="system/user/index" style="width: 95%">
                        <template v-if="formData.type == MenuTypeEnum.MENU" #prepend>src/views/</template>
                        <template v-if="formData.type == MenuTypeEnum.MENU" #append>.vue</template>
                    </el-input>
                </el-form-item>

                <el-form-item v-if="formData.type == MenuTypeEnum.MENU">
                    <template #label>
                        <div>
                            路由参数
                            <el-tooltip placement="bottom" effect="light">
                                <template #content>组件页面使用 `useRoute().query.参数名` 获取路由参数值。</template>
                                <i-ep-QuestionFilled class="inline-block" />
                            </el-tooltip>
                        </div>
                    </template>

                    <div v-if="!formData.params || formData.params.length === 0">
                        <el-button type="success" plain @click="formData.params = [{ key: '', value: '' }]">
                            添加路由参数
                        </el-button>
                    </div>

                    <div v-else>
                        <div v-for="(item, index) in formData.params" :key="index">
                            <el-input v-model="item.key" placeholder="参数名" class="w-[100px]" />

                            <span class="mx-1">=</span>

                            <el-input v-model="item.value" placeholder="参数值" class="w-[100px]" />

                            <el-icon
                                v-if="formData.params.indexOf(item) === formData.params.length - 1"
                                class="ml-2 cursor-pointer color-[var(--el-color-success)]"
                                style="vertical-align: -0.15em"
                                @click="formData.params.push({ key: '', value: '' })"
                            >
                                <CirclePlusFilled />
                            </el-icon>
                            <el-icon
                                class="ml-2 cursor-pointer color-[var(--el-color-danger)]"
                                style="vertical-align: -0.15em"
                                @click="formData.params.splice(formData.params.indexOf(item), 1)"
                            >
                                <DeleteFilled />
                            </el-icon>
                        </div>
                    </div>
                </el-form-item>

                <el-form-item v-if="formData.type !== MenuTypeEnum.BUTTON" prop="visible" label="显示状态">
                    <el-radio-group v-model="formData.visible">
                        <el-radio :value="1">显示</el-radio>
                        <el-radio :value="0">隐藏</el-radio>
                    </el-radio-group>
                </el-form-item>

                <el-form-item v-if="formData.type === MenuTypeEnum.CATALOG || formData.type === MenuTypeEnum.MENU">
                    <template #label>
                        <div>
                            始终显示
                            <el-tooltip placement="bottom" effect="light">
                                <template #content>
                                    选择“是”，即使目录或菜单下只有一个子节点，也会显示父节点。
                                    <br />
                                    选择“否”，如果目录或菜单下只有一个子节点，则只显示该子节点，隐藏父节点。
                                    <br />
                                    如果是叶子节点，请选择“否”。
                                </template>
                                <i-ep-QuestionFilled class="inline-block" />
                            </el-tooltip>
                        </div>
                    </template>

                    <el-radio-group v-model="formData.alwaysShow">
                        <el-radio :value="1">是</el-radio>
                        <el-radio :value="0">否</el-radio>
                    </el-radio-group>
                </el-form-item>

                <el-form-item v-if="formData.type === MenuTypeEnum.MENU" label="页面缓存">
                    <el-radio-group v-model="formData.keepAlive">
                        <el-radio :value="1">开启</el-radio>
                        <el-radio :value="0">关闭</el-radio>
                    </el-radio-group>
                </el-form-item>

                <el-form-item label="排序" prop="sort">
                    <el-input-number v-model="formData.sort" style="width: 100px" controls-position="right" :min="0" />
                </el-form-item>

                <!-- 权限标识 -->
                <el-form-item v-if="formData.type == MenuTypeEnum.BUTTON" label="权限标识" prop="perm">
                    <el-input v-model="formData.perm" placeholder="sys:user:add" />
                </el-form-item>

                <el-form-item v-if="formData.type !== MenuTypeEnum.BUTTON" label="图标" prop="icon">
                    <!-- 图标选择器 -->
                    <icon-select v-model="formData.icon" />
                </el-form-item>

                <el-form-item v-if="formData.type == MenuTypeEnum.CATALOG" label="跳转路由">
                    <el-input v-model="formData.redirect" placeholder="跳转路由" />
                </el-form-item>
            </el-form>

            <template #footer>
                <div class="dialog-footer">
                    <el-button type="primary" @click="submitForm">确 定</el-button>
                    <el-button @click="handleCloseDialog">取 消</el-button>
                </div>
            </template>
        </el-drawer>
    </div>
</template>

<script setup lang="ts">
defineOptions({
    name: 'Menu',
    inheritAttrs: false
})

import MenuAPI, { MenuQuery, MenuForm, MenuVO } from '@/api/menu'
import { MenuTypeEnum } from '@/enums/MenuTypeEnum'

const queryFormRef = ref(ElForm)
const menuFormRef = ref(ElForm)

const loading = ref(false)
const dialog = reactive({
    title: '新增菜单',
    visible: false
})

// 查询参数
const queryParams = reactive<MenuQuery>({})
// 菜单表格数据
const menuTableData = ref<MenuVO[]>([])
// 顶级菜单下拉选项
const menuOptions = ref<OptionType[]>([])

// 初始菜单表单数据
const initialMenuFormData = ref<MenuForm>({
    id: undefined,
    parentId: 0,
    visible: 1,
    sort: 1,
    type: MenuTypeEnum.MENU, // 默认菜单
    alwaysShow: 0,
    keepAlive: 1,
    params: []
})

// 菜单表单数据
const formData = ref({ ...initialMenuFormData.value })

// 表单验证规则
const rules = reactive({
    parentId: [{ required: true, message: '请选择顶级菜单', trigger: 'blur' }],
    name: [{ required: true, message: '请输入菜单名称', trigger: 'blur' }],
    type: [{ required: true, message: '请选择菜单类型', trigger: 'blur' }],
    routeName: [{ required: true, message: '请输入路由名称', trigger: 'blur' }],
    routePath: [{ required: true, message: '请输入路由路径', trigger: 'blur' }],
    component: [{ required: true, message: '请输入组件路径', trigger: 'blur' }],
    visible: [{ required: true, message: '请输入路由路径', trigger: 'blur' }]
})

// 选择表格的行菜单ID
const selectedMenuId = ref<number | undefined>()

// 查询菜单
function handleQuery() {
    loading.value = true
    MenuAPI.getList(queryParams)
        .then(data => {
            console.log(data)
            menuTableData.value = data
        })
        .finally(() => {
            loading.value = false
        })
}

// 重置查询
function handleResetQuery() {
    queryFormRef.value.resetFields()
    handleQuery()
}

// 行点击事件
function handleRowClick(row: MenuVO) {
    // 记录表格选择的菜单ID，新增子菜单作为父菜单ID
    selectedMenuId.value = row.id
}

/**
 * 打开表单弹窗
 *
 * @param parentId 父菜单ID
 * @param menuId 菜单ID
 */
function handleOpenDialog(parentId?: number, menuId?: number) {
    MenuAPI.getOptions()
        .then(data => {
            menuOptions.value = [{ value: 0, label: '顶级菜单', children: data }]
        })
        .then(() => {
            dialog.visible = true
            if (menuId) {
                dialog.title = '编辑菜单'
                MenuAPI.getFormData(menuId).then(data => {
                    initialMenuFormData.value = { ...data }
                    formData.value = data
                })
            } else {
                dialog.title = '新增菜单'
                formData.value.parentId = parentId
            }
        })
}

// 菜单类型切换
function handleMenuTypeChange() {
    // 如果菜单类型改变
    if (formData.value.type !== initialMenuFormData.value.type) {
        if (formData.value.type === MenuTypeEnum.MENU) {
            // 目录切换到菜单时，清空组件路径
            if (initialMenuFormData.value.type === MenuTypeEnum.CATALOG) {
                formData.value.component = ''
            } else {
                // 其他情况，保留原有的组件路径
                formData.value.routePath = initialMenuFormData.value.routePath
                formData.value.component = initialMenuFormData.value.component
            }
        }
    }
}

/** 菜单保存提交 */
function submitForm() {
    menuFormRef.value.validate((isValid: boolean) => {
        if (isValid) {
            const menuId = formData.value.id
            if (menuId) {
                MenuAPI.update(menuId, formData.value).then(() => {
                    ElMessage.success('修改成功')
                    handleCloseDialog()
                    handleQuery()
                })
            } else {
                MenuAPI.add(formData.value).then(() => {
                    ElMessage.success('新增成功')
                    handleCloseDialog()
                    handleQuery()
                })
            }
        }
    })
}

// 删除菜单
function handleDelete(menuId: number) {
    if (!menuId) {
        ElMessage.warning('请勾选删除项')
        return false
    }

    ElMessageBox.confirm('确认删除已选中的数据项?', '警告', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
    }).then(
        () => {
            loading.value = true
            MenuAPI.deleteById(menuId)
                .then(() => {
                    ElMessage.success('删除成功')
                    handleQuery()
                })
                .finally(() => {
                    loading.value = false
                })
        },
        () => {
            ElMessage.info('已取消删除')
        }
    )
}

// 关闭弹窗
function handleCloseDialog() {
    dialog.visible = false
    menuFormRef.value.resetFields()
    menuFormRef.value.clearValidate()
    formData.value.id = undefined
}

onMounted(() => {
    handleQuery()
})
</script>
